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Argentobaumhauerite Baumhauerite & Arsenic

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CSL517952

Argentobaumhauerite Baumhauerite & Arsenic

New Mineral type

Description Tabs

Description
Locality: 
Lengenbach Quarry, Binntal, Valais, Switzerland
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
2.7 × 1.4 × 1.8 cm
Description

Rare sulfosalt species argentobaumhauerite forms grey masses as an exsolution with baumhauerite. Argentobaumhauerite was formerly called as baumhauerite-2a which is still a two locality mineral. There is a also a small vug on the specimen with nice black, globular native arsenic and some realgar. Analyzed sample.

Mineral Data
What's on the rock

Argentobaumhauerite

Formula: 
Pb11Ag(As,Sb)18S36
Strunz: 
2/E.24-15
Crystal System: 
Monoclinic
Hardness: 
3
Colour: 
Steel grey
Type Locality: 
Lengenbach Quarry, Wallis, Switzerland

Baumhauerite

Formula: 
Pb12As16S36
Strunz: 
2.HC.05b
Crystal System: 
Triclinic
Hardness: 
3.0
Type Locality: 
Lengenbach Quarry, Fäld (Imfeld; Im Feld; Feld), Binn Valley, Wallis (Valais), Switzerland

Arsenic

Formula: 
As
Strunz: 
1.CA.05
Crystal System: 
Trigonal
Hardness: 
3.5
Streak: 
Grey
Loranth Minerals

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